Package net.i2p.router.tunnel

All the work of managing locally created and participating tunnels, creating and handling tunnel messages, and their encryption. Deals with the five different types of tunnel hops: outbound gateway, outbound endpoint, inbound gateway, inbound endpoint, and middle hop. Distributes messages received for each type. Validation, queueing and throttling for each type. Tunnel build message handling is in the pool package.

Interface Summary

Interface	Description
FragmentHandler.DefragmentedReceiver	Receive messages out of the tunnel endpoint.
IVValidator	Provide a generic interface for IV validation which may be implemented through something as simple as a hashtable or more a complicated bloom filter.
TunnelGateway.QueuePreprocessor
TunnelGateway.Receiver
TunnelGateway.Sender

Class Summary

Class	Description
BatchedPreprocessor	Batching preprocessor that will briefly delay the sending of a message if it doesn't fill up a full tunnel message, in which case it queues up an additional flush task.
BatchedRouterPreprocessor	Honor the 'batchFrequency' tunnel pool setting or the 'router.batchFrequency' router config setting, and track fragmentation.
BloomFilterIVValidator	Manage the IV validation for all of the router's tunnels by way of a big decaying bloom filter.
DummyValidator	accept everything
FragmentedMessage	Gather fragments of I2NPMessages at a tunnel endpoint, making them available for reading when complete.
FragmentHandler	Handle fragments at the endpoint of a tunnel, peeling off fully completed I2NPMessages when they arrive, and dropping fragments if they take too long to arrive.
HashSetIVValidator	Deprecated. unused
HopConfig	Defines the general configuration for a hop in a tunnel.
HopProcessor	Take a received tunnel message, verify that it isn't a duplicate, and translate it into what the next hop will want.
InboundEndpointProcessor	Receive the inbound tunnel message, removing all of the layers added by earlier hops to recover the preprocessed data sent by the gateway.
InboundGatewayProcessor	Override the hop processor to seed the message with a random IV.
InboundGatewayReceiver	Handle messages at the IBGW.
InboundMessageDistributor	When a message arrives at the inbound tunnel endpoint, this distributor honors the instructions (safely)
InboundSender	Receive the preprocessed data for an inbound gateway, encrypt it, and forward it on to the first hop.
OutboundGatewayMessage	Stores all the state for an unsent or partially-sent message
OutboundGatewayProcessor	Turn the preprocessed tunnel data into something that can be delivered to the first hop in the tunnel.
OutboundMessageDistributor	When a message arrives at the outbound tunnel endpoint, this distributor honors the instructions.
OutboundReceiver	We are the outbound gateway - we created this outbound tunnel.
OutboundSender	Receive the preprocessed data for an outbound gateway, encrypt all of the layers, and forward it on to the first hop.
OutboundTunnelEndpoint	We are the end of an outbound tunnel that we did not create.
PendingGatewayMessage	Stores all the state for an unsent or partially-sent message
PumpedTunnelGateway	This is used for all gateways with more than zero hops.
RouterFragmentHandler	Minor extension to allow message history integration
ThrottledPumpedTunnelGateway	Same as PTG, but check to see if a message should be dropped before queueing it.
TrivialPreprocessor	Do the simplest thing possible for preprocessing - for each message available, turn it into the minimum number of fragmented preprocessed blocks, sending each of those out.
TrivialRouterPreprocessor	Deprecated. unused
TunnelCreatorConfig	Coordinate the info that the tunnel creator keeps track of, including what peers are in the tunnel and what their configuration is See PooledTunnelCreatorConfig for the non-abstract class
TunnelDispatcher	Handle the actual processing and forwarding of messages through the various tunnels.
TunnelGateway	Serve as the gatekeeper for a tunnel, accepting messages, coallescing and/or fragmenting them before wrapping them up for tunnel delivery.
TunnelGatewayPumper	Run through the tunnel gateways that have had messages added to them and push those messages through the preprocessing and sending process.
TunnelGatewayZeroHop	Serve as the gatekeeper for a tunnel with no hops, either inbound or outbound.
TunnelParticipant	Participate in a tunnel at a location other than the gateway or outbound endpoint.

Enum Summary

Enum	Description
TunnelDispatcher.Location	for shouldDropParticipatingMessage()